Perennial: Parma violets are very hard to come by! This one carries very fragrant double, petite lavender-blue flowers in spring. Attracts butterflies. It is ideal for a woodland garden, low border, as a ground cover or in containers. Height: around 6 inches. Spread: 16". Exposure: sun on coast/part shade elsewhere. Water: moderate. Drought tolerant. USDA Z6.